MAINTENANCE

Air filter

The air filter must be regularly cleaned from dust and dirt in order to avoid:

•Carburetor malfunctions

•Starting problems

•Engine power reduction

• Unnecessary wear on the engine parts

• Abnormal fuel consumption

Clean the air filter daily or more often if the air is exceptionally dusty in the working area.

•Disassemble the air filter by removing the cylinder cover and unscrew the filter.

When reassembling, make sure that the filter is tight against the filter holder. Clean the filter by brushing or shaking it.

•A more thorough cleaning of the filter is obtained by washing it in water and soap.

An air filter, which is used for some time, cannot be cleaned completely. Therefore it must be replaced by a new one, with regular intervals.

IMPORTANT! A damaged air filter must always be replaced.

Spark plug

0,5 mm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The spark plug condition is influenced by:

• An incorrect carburetor

a special screen. If your saw has this type of muffler, you should clean the screen at least once a week. This is done with a wire brush.

CAUTION! The screen must be replaced, if damaged. The saw will be overheated, if the screen is clogged. This results in damage on the cylinder and the piston. Never use a saw with a clogged or defective muffler.

Adjustment of the oil pump

The oil pump is adjustable. Adjustments are made by turning the screw using a screwdriver or combination spanner. The saw is supplied from the factory set to 1 turn open. Turning the screw clockwise will reduce the oil flow and turning the screw anti-clockwise will increase the oil flow.

!WARNING! The engine must not be running when making adjustments.

Recommended settings:

Bar 18“-20“: 0 turns from the closed position.

Bar 20“-24“: 3/4 turns from the closed position.

Bar 24“-28“: 1 1/2 turns from the closed position.

Bar 28 and longer: 1 3/4 turns from the closed position.

These recommendations apply to Husqvarna’s chain oil, for other chain oil increase the oil flow by one step.

Needle bearing maintenance

 

setting.

•

Wrong fuel mixture (too

 

much oil in the gasoline).

•

A dirty air filter.

These factors cause deposits on the spark plug electrodes, which may result in malfunction and starting difficulties.

If the engine is low on power, difficult to start or runs poorly at idling speed, always check the spark plug first. If

the spark plug is dirty, clean it and check the electrode gap. Readjust if necessary. The correct gap is 0.5 mm (0,020"). The spark plug should be replaced after about a month in operation or earlier if the electrodes are badly eroded.

IMPORTANT! Always use the recommended spark plug type. An incorrect spark plug can severely damage the piston/ cylinder.

Muffler

The muffler is designed in order to reduce the noise level and to direct the exhaust gases away from the operator. The exhaust gases are hot

and can contain sparks, which may cause fire if directed against dry and combustible material. Some mufflers are equipped with

The clutch drum is equipped with one of the following chain sprockets:

•Spur sprocket (A) (the chain sprocket is welded on the drum)

•Rim sprocket (B) (exchangeable)

Both versions have buit-in needle bearing at the drive shaft, whitch has to be greased regularly (once a week).

NOTE! Use only high quality bearing grease.

A

B

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Husqvarna 394XP manual Air filter, Spark plug, Adjustment of the oil pump, Needle bearing maintenance, Muffler
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394XP specifications

The Husqvarna 394XP is a powerful chainsaw designed for professional use, catering to the demands of loggers and forestry workers. Launched as part of Husqvarna's XP series, the 394XP offers a perfect blend of performance, durability, and ergonomic design, making it an outstanding choice for heavy-duty cutting tasks.

One of the standout features of the 394XP is its robust engine. It is equipped with a 94 cc, two-stroke engine that delivers impressive power while maintaining efficient fuel consumption. This high-output engine ensures that users can tackle demanding jobs with ease, whether it’s felling large trees or processing timber. The chainsaw also features a high chain speed, which enhances cutting performance and efficiency.

The 394XP is designed with user comfort in mind. It includes an adjustable oil pump, which allows for better control over oil flow and helps prolong the lifespan of the bar and chain. Additionally, the chainsaw boasts a lightweight design, which minimizes user fatigue during prolonged use. The ergonomic handle is designed to provide an optimal grip, ensuring maximum control and comfort during operation.

In terms of advanced technologies, the Husqvarna 394XP integrates the Air Injection system. This innovative technology helps to reduce wear and tear on the engine by separating larger dust and debris particles before they reach the air filter. This results in less frequent maintenance, ensuring the chainsaw operates smoothly over extended periods. The chainsaw also features the LowVib® system that significantly reduces vibrations, further enhancing comfort and allowing for longer usage without strain.

The chainsaw is fitted with a durable, forged cutting chain that provides sharp and precise cuts. Coupled with a guide bar that is available in various lengths, users can choose the optimal configuration for their cutting needs. The quick-release air filter makes maintenance simpler and faster, ensuring that the saw remains in peak condition.

In summary, the Husqvarna 394XP stands out in the world of professional chainsaws due to its exceptional power, innovative technologies, and user-centric design. It offers reliability and efficiency, making it an essential tool for anyone in the forestry and logging industries. Whether faced with the toughest cutting tasks or everyday maintenance work, the 394XP is engineered to perform at the highest level, empowering users to accomplish their work quickly and effectively.
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